Nerves Of Pelvis And Perineum - 2/18 Olinger

Question 1

What are the nerve roots of inferior gluteal nerve?

Answer 1

L5, S1, S2

Question 2

What are the nerve roots of nerve to quadratus femoris?

Answer 2

L4, L5, S1

Question 3

What are the nerve roots of nerve to Obturator internus?

Answer 3

L5, S1, S2

Question 4

What are the nerve roots of nerve to piriformis?

Answer 4

S1, S2

Question 5

What are the nerve roots of posterior femoral cutaneous nerve?

Answer 5

S1, S2, S3

To butt and upper most region of posterior thigh

Question 6

Pudendal n. Nerve roots?

Answer 6

S2-S4

Question 7

What does the deep perineal nerve innervate?

Answer 7

Superficial and deep transverse perineal muscles
Ischiocavernosus
Bulbospongiosus
Vaginal vestibule
Inferior most part of vagina

Question 8

What are the nerve roots of superior gluteal nerve?

Answer 8

L4, L5, S1

Question 9

What produces the posterior scrotal nerve and posterior labial nerve?

Answer 9

Superficial perineal nerve

Question 10

Sciatic nerve, nerve roots?

Answer 10

L4-S3

Question 11

Coccygeal plexus nerve roots?

Answer 11

S4, S5, coccygeal nerve

Question 12

Nerve to levator ani nerve root?

Nerve to coccygeus?

Answer 12

S4

S4, S5

Question 13

How do the rami communicants of the sacral sympathetic trunk travel?

Answer 13

Postsynaptic sympathetic fibers leave trunk and enter ventral rami of sacra and coccygeal spinal nerve to provide Symp innervation or the lower extremity

Question 14

What accompanies visceral sensory fibers?

What do they convey?

Answer 14

PS fibers of pelvic splanchnic nerves

Retrograde pain impulses through pelvic splanchnic nerves into ventral rami of sacral spinal nerves -> dorsal root -> synapse in dorsal horn of spinal cord

Question 15

What are the 2 sub plexuses of intermesenteric plexus?

Answer 15

Periarterial

Ovarian

Question 16

What nerve transmits information to the inferior hypogastric plexus?

Answer 16

Hypogastric nerve

Question 17

Is the superior hypogastric plexus Symp, PS, or mixed?

Answer 17

Sympathetic ONLY

Question 18

Where does the inferior hypogastric plexus receive sympathetic innervation from?

Answer 18

Hypogastric nerve

Sacral splanchnic nerves

Question 19

Where does the inferior hypogastric plexus receive PS innervation from?

Answer 19

Pelvic splanchnic nerves

Question 20

What are the sub plexuses of the inferior hypogastric plexus?

What kind of innervation do they have?

Answer 20

Vesical
Uterovaginal
Prostatic

Mixed PS and Symp

Question 21

What does the vesical plexus innervate?

Answer 21

Detrusor m.
External urethral sphincter m
Internal urethral sphincter m.

Question 22

What does the uterovaginal plexus innervate?

Answer 22

Uterus
Uterine tube
Vagina
Ovaries

Question 23

What do the cavernous nerves do?

Answer 23

PS innervation to bulbs of vestibule, clitoris and vestibular glands and erectile tissue

Question 24

What do visceral sensory fibers from the fundus and body of the uterus accompany?

Answer 24

Sympathetic fibers of the uterovaginal plexus, through the autonomic plexuses and the rami communicates to the spinal cord

Question 25

What do visceral sensory fibers from the cervix of the uterus and upper majorly of the vagina accompany?

Answer 25

PS fibers of the uterovaginal plexus, through the pelvic splanchnic nerves into the sacral part of spinal cord